Hides the Preview Pane in File Explorer. If you enable this policy setting the Preview Pane in File Explorer is hidden and cannot be turned on by the user. If you disable or do not configure this setting the Preview Pane is hidden by default and can be displayed by the user.
* Making mistakes while changing registry values can affect your system adversely. We recommend you to create a System Restore point before making registry manipulation. If you're new to Registry Editor, read this beginner's guide.
** To locate the registry and administrative template path, checkout beginner's guide.